How do you convert mega to kilo?

To convert mega (M) to kilo (k), multiply the measurement in mega by 1,000 (kilo = mega × 1,000).

What is 5 mega in kilo?

5 mega (5 M) is equal to 5,000 kilo (5,000 k).

Which is larger, 1 mega (m) (M) or 1 kilo (k) (k)?

One mega (m) (M) is larger than one kilo (k) (k). Specifically, 1 M contains 1,000 k, whereas 1 k is 0.001 M.

How do I convert back from kilo (10³) (k) to mega (10⁶) (M)?

To reverse the calculation from k to M, multiply your kilo (k) value by the inverse factor 0.001 (or divide by 1,000). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round M to k results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 M ≈ 5,000.00 k). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Mega to Kilo Converter

Enter the prefix value in mega below to convert it to kilo.

Kilo (10³) to Mega (10⁶) (k → M)

Convert Mega (10⁶) to Kilo (10³)

Enter a value in mega (10⁶) (M) to convert to kilo (10³) (k).

Value (M)

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Result

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5,000kilo (10³)

5 M = 5,000 k

Result updates automatically

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Suggested Conversions

Reference:NIST OWM (SI Units — Length)

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Mega to Kilo Conversion Table

Table showing various mega measurements converted to kilo. Click any preset value or arrow to load it into the converter.

Mega (10⁶) (M)	Kilo (10³) (k)
1 M	1,000 k
2 M	2,000 k
2.5 M	2,500 k
5 M	5,000 k
10 M	10,000 k
15 M	15,000 k
20 M	20,000 k
25 M	25,000 k
30 M	30,000 k
50 M	50,000 k

How to Convert Mega to Kilo

To convert mega to kilo, multiply the prefix value by the following conversion ratio: 1,000 kilo/mega.

Since one mega is equal to 1,000 kilo, you can use this simple formula to convert:

kilo = mega × 1,000

The prefix value in kilo is equal to the prefix value in mega multiplied by 1,000.

For example, here's how to convert 5 mega to kilo using the formula above.

kilo = (5 M × 1,000) = 5,000 k

How Many Kilo Are in a Mega?

There are 1,000 kilo in a mega, which is why we use this value in the formula above.

1 M = 1,000 k|1 k = 0.001 M

Our mega to kilo calculator automatically converts your prefix value measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Mega and kilo are both units used to measure prefix value. Keep reading to learn more about each unit.

What Is a Mega?

A mega is a unit of prefix value equal to 1,000,000 base units (1), the base unit for prefix value. SI prefix for 10⁶ (million). [1]

The mega is classified as an International System of Units (SI) unit of prefix value. Mega can be abbreviated as M; for example, 1 mega can be written as 1 M.

When working with mega (M) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, mega (M) are widely used across large-scale industrial, bulk, and macro-level prefix value specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.

Learn more about mega in our Prefixes Converter.

What Is a Kilo?

A kilo is a unit of prefix value equal to 1,000 base units (1), the base unit for prefix value. SI prefix for 10³ (thousand). [2]

The kilo is classified as an International System of Units (SI) unit of prefix value. Kilo can be abbreviated as k; for example, 1 kilo can be written as 1 k.

When working with kilo (k) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, kilo (k) are widely used across large-scale industrial, bulk, and macro-level prefix value specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.

Learn more about kilo in our Prefixes Converter.

When converting prefix value between mega (M) and kilo (k), keep full floating-point precision (1 M = 1,000 k; 1 k = 0.001 M) during intermediate calculations and round only the final kilo figure to match your instrument tolerance.

More Mega & Kilo Conversions

Need to calculate in the opposite direction? Use our kilo (10³) to mega (10⁶) calculator to switch your starting unit immediately. You can also explore related tools such as converting kilo (10³) to mega (10⁶), converting mega (10⁶) to base units (10⁰), or converting base units (10⁰) to tera (10¹²).

Convert from Mega

Convert to Kilo

Frequently Asked Questions

There are 1,000 kilo (k) in 1 mega (M). Conversely, 1 kilo (k) is equal to 0.001 mega (M).

Prefixes Converter

Quick Info

Direct Factor: 1 mega (m) (M) equals 1,000 kilo (10³) (k).
Inverse Factor: 1 kilo (k) (k) equals 0.001 mega (10⁶) (M).
Formula: kilo (10³) = mega (10⁶) × 1,000.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Mega (M) (M)

SI prefix for 10⁶ (million).

Kilo (k) (k)

SI prefix for 10³ (thousand).

Base Unit (No Prefix) (1)

Unprefixed SI base unit (10⁰ = 1).

References

[1]NIST OWM · SI Units — Length
Source
[2]BIPM · SI Base Unit: Metre (m)
Source
[3]NIST HB 133 · NIST Handbook 133 (2019 Ed.)
Source

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References

NIST · BIPM · ISO

[1]
NIST OWM (SI Units — Length)·Prefixes Metrology Standard — Mega (10⁶) (M) to Kilo (10³) (k)
NIST OWM Standard
[2]
BIPM (SI Base Unit: Metre (m))·Unit Specifications: Mega (M) (M) & Kilo (k) (k)
BIPM Specification
[3]
NIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (M to k)
NIST HB 133 Reference

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