Foot to Light year Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert feet [ft] to light years [ly] or light years [ly] to feet [ft]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 foot [ft] ≈ 3.222 * 10-17 light years [ly]1 light year [ly] ≈ 3.104 * 1016 feet [ft]

Convert feet to light years

There are two simple ways to convert feet [ft] to light years [ly]. In the first calculation method, the value in feet [ft] is divided by the rounded conversion factor of 3.104 * 1016. The second method multiplies the value in feet [ft] by the rounded conversion factor of 3.222 * 10-17.

  • Light years [ly] ≈ feet [ft] ÷ (3.104 * 1016)
  • Light years [ly] ≈ feet [ft] * 3.222 * 10-17

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of feet [ft] to light years [ly] can be achieved using the following calculation method.

  • Light years [ly] = feet [ft] ÷ 3,981,712 ÷ 23,760,459 * 3,048 ÷ 106

Convert light years to feet

Converting light years [ly] to feet [ft] is easy and can be done in two ways. The first method involves multiplication, in which the value in light years [ly] is multiplied by the rounded conversion factor of 3.104 * 1016. The second variant is a division. Here, the value in light years [ly] is divided by the rounded conversion factor of 3.222 * 10-17.

  • Feet [ft] ≈ light years [ly] * 3.104 * 1016
  • Feet [ft] ≈ light years [ly] ÷ (3.222 * 10-17)

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of light years [ly] to feet [ft] can be achieved using the following calculation method.

  • Feet [ft] = light years [ly] * 3,981,712 * 23,760,459 ÷ 3,048 * 106

Converter

Decimal places

How it's calculated

Factor: 
≈ 3.104 * 1016
Light years = Feet ÷ 3,981,712 ÷ 23,760,459 * 3,048 ÷ 106
Feet = Light years * 3,981,712 * 23,760,459 ÷ 3,048 * 106

To all available units

Feet

Megaparsecs

Feet

Nautical miles

Feet

Parsecs

Feet

Planck length

Feet

Quarter miles

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