Long Tons (UK ton) to Metric Tonnes (t) Converter
Enter a value to instantly convert between weight units.
1 Long Ton (UK) = 1.016 Metric Ton
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
t = lt × (1016.0469088 / 1000)One long ton is about 1.01605 metric tons, so multiply long tons by 1.0160469. NIST Handbook 44 sets the long ton at 2240 pounds, or 1016.0469088 kg with the pound from NIST footnote 22, while NIST Chapter 5 gives the tonne as 1000 kg. Older records may use long tons where newer documents use tonnes. A ship of 50,000 long tons displacement is about 50,802 t. The 1.6% gap between the units makes them unsafe to swap.
Source: NIST exact and named mass definitions (definition-derived arithmetic)
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
A 1 long ton cargo lot, in tonnes.
1 lt = 1.016046909 t
A 10 long ton shipment, restated for a metric invoice.
10 lt = 10.16046909 t
A 5 long ton delivery quoted in imperial units.
5 lt = 5.080234544 t
Example: a 20 long ton bulk load.
20 lt = 20.32093818 t