Tons (water) to lasts

This free conversion calculator will convert tons (water) to lasts, i.e. ton (water) to last. Correct conversion between different measurement scales.

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The formula is $$$V_{\text{last}} = \frac{7}{20} V_{\text{ton (water)}}$$$, where $$$V_{\text{ton (water)}} = 15$$$.

Therefore, $$$V_{\text{last}} = \frac{21}{4}$$$.

Answer: $$$15 \text{ton (water)} = \frac{21}{4} \text{last} = 5.25 \text{last}$$$.