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Cubic Meters to Liters at STP Converter
↔ Convert L (STP) to m³ instead

Common Conversions

m³ L (STP)
0.001 1
0.005 5
0.01 10
0.05 50
0.1 100
0.5 500
1 1000
2 2000
5 5000
10 10000

Why this conversion matters in chemistry

The liter-to-cubic-meter factor is purely geometric — 1000 L in 1 m³, exact, no chemistry involved — but pairing it with the STP qualifier is what makes the number useful. A mole of ideal gas at modern IUPAC STP (0°C, 1 bar) occupies 22.711 L; at the older 1-atm STP it's 22.414 L. So 1 m³ at IUPAC STP holds 44.03 mol of gas, or at old STP 44.62 mol. That relationship is what lets you take a reactor headspace volume or a gas-storage tank capacity in m³ and turn it into the number of moles you're dealing with — the input to almost any stoichiometric or safety calculation.

Formula

L = m³ × 1000

Worked Examples

0.022414 m³ = 22.414 L

One mole of ideal gas at old STP (0°C, 1 atm). A number many chemists can recite on command.

1 m³ = 1000 L

A cubic meter of gas. The clean anchor point.

0.001 m³ = 1 L

A single liter — the smallest benchtop gas volume where m³ conversion starts to matter.

Frequently Asked Questions

How do I convert m³ to L?
Multiply by 1000. The liter is defined as exactly 0.001 m³, so the relationship is geometric and exact. No rounding needed.
How many moles of gas sit in 1 m³ at STP?
It depends on which STP you mean. At old STP (0°C, 1 atm), the molar volume is 22.414 L/mol, so 1000 L holds 44.6 mol. At IUPAC STP (0°C, 1 bar), the molar volume is 22.711 L/mol and 1000 L holds 44.0 mol — a 1.3% gap that reflects the pressure-definition change.
How do gas cylinders relate to m³?
Industrial cylinders are typically rated by the gas volume they'll release when depressurized to atmospheric. A standard high-pressure cylinder with 50 L internal volume at 200 bar holds roughly 10 m³ (10,000 L) of gas at STP. That's the number that shows up in ventilation and safety calculations.