Betting maths and calculators
How do I calculate a 4/1 each-way place return at one-fifth odds?
Direct answer
At 4/1 WIN odds with one-fifth place terms, the PLACE odds are 4/5 = 0.8/1 = decimal 1.80. A $5 place stake returns $9 gross if it qualifies; the separate win stake settles independently.
How to use this answer
This answer is based on the mathematical principle or published rule identified in the source below. If the question involves a live betting market, confirm its settlement definition before applying it to a specific bet.
The place odds are 4/5, or 0.8-to-1, giving 1.8 times the place stake back if the selection places.
Use the precise stake, decimal odds, market terms and outcome probabilities when calculating the result. Expected value measures an average over hypothetical repetitions, not a guaranteed profit.