Dog age in human years calculator

0–1: Dog age [years] × 15; 1–2: 15 + (Dog age [years] − 1) × 9; 2+: 24 + (Dog age [years] − 2) × (4 / 5 / 6). Human years are an illustrative approximation, not a biological measurement. The first two years are weighted differently; dog size changes the later annual factor.

Human years are an illustrative approximation, not a biological measurement. The first two years are weighted differently; dog size changes the later annual factor. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

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Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.