700 Pounds to Kilograms

700 Pounds to Kilograms Calculator

700 lb = 317.514659 kgAlso: 700 lb = 317 kg 514.66 g
© Measurements Calculator — Conversion factor: 1 lb = 0.45359237 kg (NIST, exact)

Need to turn 700 lb into kilograms quickly? It works out to 317.51 kg, or 317 kg 514.66 g. This page shows the exact conversion factor, a worked example, a multi-unit reference chart and a calculator you can use for any other value too.

Because the pound-to-kilogram relationship is locked in by international agreement, the answer to “how many kilograms is 700 pounds?” never depends on the substance you’re weighing. The exact factor (1 lb = 0.45359237 kg, so 1 kg = 2.2046226218 lb) was established by the 1959 International Yard and Pound Agreement and is maintained today by NIST, BIPM, and every national metrology institute.

What is 700 Pounds in Kilograms?

700 lb = 317.51 kg
= 317 kg 514.66 g

Kilograms (rounded)

317.51 kg

Full precision

317.514659 kg

Kilograms + grams

317 kg 514.66 g

Stones + pounds

50 st 0 lb

Grams

317,514.66 g

Ounces

11,200 oz
Real-world check: 700 pounds is approximately the mass of a loaded pallet of goods — a handy mental reference when you don’t have a scale nearby.

How to Convert 700 Pounds to Kilograms

Step 1: Use the Exact Conversion Factor

Pounds and kilograms both measure mass (not volume), so there is no density to consider — the conversion is one fixed multiplication. The internationally defined relationship is:

1 pound = 0.45359237 kilograms  |  1 kilogram = 2.2046226218 pounds

Step 2: Apply the Formula to 700 Pounds

To turn 700 pounds into kilograms, multiply by 0.45359237:

Kilograms = 700 × 0.45359237 = 317.514659 kg

Quick mental math: Multiplying by 0.45359 is fiddly by hand. A faster trick: halve the pounds, then take off about 10%. For 700 lb that lands within a fraction of a percent of the exact answer — close enough for travel, fitness, or kitchen use.

Step 3: Express the Result in Kilograms and Grams

International scales usually show kilograms with grams rather than a long decimal. Take the whole-kilogram part and keep the remainder as grams:

700 lb → 317.514659 kg → 317 kg 514.66 g

In the UK, body weight is more often given in stones and pounds, which makes 700 lb read as 50 st 0 lb.

Step 4: Worked Reverse Example

Goal: Confirm 317.51 kg converts back to 700 lb.

1. Use the reverse formula:

Pounds = kilograms × 2.2046226218

2. Plug in 317.51 kg:

317.51 × 2.2046226218 ≈ 700 lb

Tiny rounding differences appear because the displayed kilogram value is truncated — the calculator at the top of the page uses the full-precision factor and will round-trip exactly.

Step 5: Pick the Right Pound

Not every “pound” is the same unit. Match the pound to the situation:

  • Avoirdupois pound (0.45359237 kg) — food, kitchen scales, postage, body weight, retail, sports equipment. When a label or recipe says “lb” without qualification, this is the unit. 700 lb = 317.51 kg.
  • Troy pound (0.3732417216 kg) — historical unit for precious metals (12 troy ounces). 700 troy pounds is a smaller mass than 700 avoirdupois pounds, so always confirm which one a bullion quote uses.
  • Metric pound / Pfund (0.5 kg) — informal European market unit. 700 metric pounds = 700 × 0.5 kg, which is heavier than 700 avoirdupois pounds.

Rounding rules used on this page: Kilograms are displayed to four decimal places by default, two for everyday use, and to a full six-decimal value when laboratory accuracy is needed. The kilograms-and-grams breakdown uses the exact pound value before rounding, so it always reconciles with the decimal-kilogram result.

700 lb in Freight and Livestock

A mass of 700 lb comes to 317.51 kg — the scale of a dairy cow, a loaded pallet, or a small vehicle. This is where logistics, agriculture and manufacturing all need a reliable lb-to-kg figure.

700 Pounds — Multi-Unit Reference Chart

700 Pounds Converted All-units quick reference Unit Value for 700 lb Kilograms317.51 kg Kilograms — full precision317.514659 kg Kilograms + grams317 kg 514.66 g Stones + pounds50 st 0 lb Grams317,514.66 g Ounces11,200 oz Stones50 st Milligrams317,514,659 mg Troy ounces10,208.3333 oz t Troy pounds850.6944 lb t Grains4,900,000 gr Carats1,587,573.3 ct Avoirdupois pound: 0.45359237 kg (exact, NIST). 1 kg = 2.2046226218 lb. Real-world reference: 700 lb ≈ a loaded pallet of goods © Measurements Calculator
Download Chart (PNG)

700 Pounds Converted to Other Weight Units

UnitValueNotes
Kilograms317.51 kgSI / metric base unit
Kilograms (full precision)317.514659 kgSix decimal places
Kilograms + grams317 kg 514.66 gMixed metric format
Stones + pounds50 st 0 lbUK / Ireland body weight
Stones50 st1 st = 14 lb
Grams317,514.66 g700 × 453.59237 g
Ounces (avoirdupois)11,200 oz700 × 16 oz
Milligrams317,514,659 mgDosages / lab use
Tonnes (metric)0.317515 t1 t = 1,000 kg
Troy ounces10,208.3333 oz tGold, silver, platinum trade
Troy pounds850.6944 lb tPrecious-metal pound (12 oz t)
Metric pound635.0293 (500 g)European market usage
Grains4,900,000 grBullets, arrows, powder
Carats1,587,573.3 ct1 ct = 200 mg (gems)

700 Pounds in Context

Weight class: bulk

700 pounds is roughly the mass of a loaded pallet of goods. On a US-marked scale you’ll see a reading of 700 lb; on a metric scale the same item registers as 317.51 kg (317 kg 514.66 g). The difference is purely the unit — the underlying mass is identical.

When following a US recipe abroad, 700 lb of an ingredient reads as 317.51 kg on a metric kitchen scale — handy when adapting an American cookbook.

Did you know? The pound is legally defined through the kilogram: one pound is exactly 0.45359237 kg. That is why 700 lb converts to an exact 317.514659 kg rather than a rounded approximation.

Practical tip: to picture 700 lb on a metric scale, think 317 kg 514.66 g — the kilograms-and-grams form most international scales display.

Pounds & Kilograms — A Quick Primer

The Pound (lb) — More Than One Definition

“Pound” is one of the most ambiguous words in measurement, because several distinct pounds have been used historically. Each gives a different result in kilograms for 700 pounds:

Avoirdupois pound (lb)

= 0.45359237 kg (exact). The default pound for food, postage, body weight and consumer goods. 700 lb = 317.51 kg.

Troy pound (lb t)

= 0.3732417216 kg (12 troy ounces). Used for precious metals and coinage. Lighter than the avoirdupois pound.

Metric pound (Pfund)

= 0.5 kg exactly. Informal European market usage. 700 metric pounds = 700 × 0.5 kg.

Stone (st)

= 6.35029318 kg (14 lb). UK and Irish body-weight unit. 700 lb = 50 st 0 lb.

The Kilogram (kg) — The SI Base Unit of Mass

The kilogram is the only SI base unit still defined by a fundamental constant rather than a prototype object. Since the 2019 redefinition it is fixed through Planck’s constant, so the 317.51 kg that 700 lb maps to is anchored to a constant of nature rather than a metal cylinder in a vault. One kilogram equals exactly 1,000 grams, which is why 700 lb is also 317,514.66 g.

Why the Conversion Is Exact

Unlike volume-based conversions (where the answer depends on density), pounds-to-kilograms is a fixed mass-to-mass conversion. The 1959 International Yard and Pound Agreement defined the avoirdupois pound as exactly 0.45359237 kg. That makes the conversion of 700 pounds to kilograms mathematically exact, not an approximation — 700 lb is precisely 317.514659 kg.

A Brief History of the Two Units

The pound descends from the Roman libra pondo — the source of the abbreviation “lb.” The kilogram was introduced during the French Revolution as part of the metric system and became the SI base unit of mass. Since 1959 the pound has been defined in terms of the kilogram, so the two are permanently linked: 700 lb means exactly 317.514659 kg everywhere in the world.

Where 700 Pounds Comes Up in Daily Life

🏋 Fitness & Body Weight

US scales and gyms record weight in pounds; doctors, BMI charts and the rest of the world use kilograms. 700 lb = 317.51 kg = 50 st 0 lb.

✈️ Air Travel & Luggage

Many US travellers pack by the pound while airlines post baggage limits in kilograms. 700 lb = 317.51 kg — check a case against the allowance before you reach the desk.

👶 Baby & Newborn Weight

US birth weight is announced in pounds, but hospital scales and paediatric charts use kilograms. 700 lb = 317.51 kg (317 kg 514.66 g).

🍳 International Cooking

US recipes list bulk ingredients in pounds; metric recipes use kilograms and grams. 700 lb converts to 317.51 kg when scaling a recipe up or down.

📦 Shipping & Freight

US carriers price by the pound; international tiers use kilograms. At 700 lb (317.51 kg) you can match a parcel to the right tier.

🧾 Precious Metals

Gold, silver and platinum are quoted in troy units. 700 avoirdupois pounds equals 10,208.3333 troy ounces or 850.6944 troy pounds.

FAQ: 700 Pounds to Kilograms

❓ How many kilograms is 700 pounds?

700 pounds equals 317.51 kilograms (317.514659 kg at full precision), which can also be written as 317 kg 514.66 g in kilograms and grams, or 50 st 0 lb in stones and pounds.

⚖ Does the answer change for different ingredients?

No. Both pounds and kilograms measure mass, so the conversion is fixed regardless of what you’re weighing. 700 lb of feathers and 700 lb of lead are both 317.51 kg — they just take up wildly different volumes.

📏 What’s the exact formula?

Kilograms = Pounds × 0.45359237  |  Pounds = Kilograms × 2.2046226218
For 700 pounds: 700 × 0.45359237 = 317.514659 kg.

🪁 What is 700 lb in kilograms and grams?

700 lb = 317 kg 514.66 g. Take the whole-kilogram part of 317.51 kg and keep the remaining grams — the mixed metric form most international scales display.

🇬🇧 What is 700 lb in stones and pounds?

700 lb = 50 st 0 lb. One stone equals 14 pounds (6.35029318 kg), so divide the pound figure by 14 for whole stones and keep the remainder as pounds. Stones are standard for body weight in the UK and Ireland.

🏆 What if I’m weighing gold, silver or another precious metal?

Use troy units. 700 avoirdupois pounds = 10,208.3333 troy ounces or 850.6944 troy pounds. Bullion bars and coin specifications are universally quoted in troy units, not avoirdupois.

🔬 What’s the most accurate way to read 700 lb in kilograms?

Use the exact factor (0.45359237 kg per pound) or a calibrated digital scale set to kilograms.
Pro tip: A scale showing 700 lb is the correct reading for 317.51 kg — same mass, different label.

🔁 How do I reverse-check this conversion?

Multiply the kilogram result by 2.2046226218 and you should recover 700 lb (with a small rounding tolerance if you used a truncated kilogram value).

📊 Quick reference: 700 lb in nearby units

UnitFrom 1 lb700 lb equals
Kilograms0.4535924 kg317.51 kg
Kilograms + grams0 kg 453.59 g317 kg 514.66 g
Stones0.07143 st50 st
Ounces16 oz11,200 oz
Grams453.59237 g317,514.66 g
Troy ounces14.58333 oz t10,208.3333 oz t
Troy pounds1.21528 lb t850.6944 lb t
Grains7,000 gr4,900,000 gr
Carats2,267.96 ct1,587,573.3 ct
All factors confirmed against NIST Handbook 44, Appendix C, and the BIPM SI Brochure (9th edition).

Nearby Pounds to Kilograms Conversions

Explore the conversions immediately surrounding 700 pounds:

Need the reverse? Use the Kilograms to Pounds calculator.

Browse the full Pounds to Kilograms conversion hub for every value, printable charts and stone, ounce and gram references.