Mortgage Points Calculator
Compare mortgage quotes with and without points. See payment savings, point cost, and your payment break-even time.
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Mortgage Recast Calculator
Estimate your new mortgage recast payment, monthly savings, fee payback, and payoff trade-off if you keep paying the old amount.
Extra Mortgage Payment Calculator
Estimate mortgage interest saved, payoff time, or the extra monthly principal needed to reach a payoff goal.
Biweekly Mortgage Payment Calculator
Compare monthly and biweekly mortgage payments, see interest saved, payoff time saved, and choose how half-payments are credited.
Three Phase Voltage Drop Calculator
Calculate estimated three-phase voltage drop, percent drop, and load voltage from conductor details, current, and one-way length.
Dedicated Circuit Load Calculator
Check breaker fit for one dedicated device load, including the 125 percent continuous-load rule and optional voltage drop.
Power Strip Load Calculator
Add watts or amps for devices on a power strip and check strip load, long-run target, setup safety, and same-circuit room.
Extension Cord Wattage Calculator
Check extension cord watts, amps, voltage drop, and the safe limit from cord length, AWG, voltage, and amp rating.
Extension Cord Ampacity Calculator
Check extension cord amps, voltage drop, and AWG size for a load, length, and outlet rating.
Outlet Load Calculator
Check outlet circuit load with watts or amps, including long-running loads, short-use loads, breaker size, and room left.