Tank Heat-Up Calculator

BTU, Heating Time & Wattage

$1.99 · Designed for iPad. Not verified for macOS.

Tank heating time and power estimator. Need to know how long your tank heater takes to reach temperature, or what size heater a new tank requires? This calculator gives you the answer in seconds. Enter tank volume, fluid type, start and target temperatures, and heater power. Get total BTU required, exact heating time, and heater output — with efficiency adjustment built in. WHAT YOU GET: - Total heat energy required (BTU) - Heating time based on heater wattage - Required heater power for a desired heat-up time - Side-by-side fluid comparison - Efficiency-adjusted results FLUIDS SUPPORTED: Water, oil, and glycol — each with accurate specific heat and density values. UNITS: Fahrenheit or Celsius for temperature. Gallons or liters for volume. COMPARE MODE: See how different fluids, heater sizes, or tank volumes affect your heat-up time side by side. Works completely offline. No account required. Built for process engineers, maintenance technicians, and plant operators who need fast thermal calculations on the floor.

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Added a More Pro Tools section to discover related field calculators.

Version 1.0.3

The developer, Shanghai Sheyuan Network Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Shanghai Sheyuan Network Technology Co., Ltd.
    Size
    1 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Sheyuan Inc.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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