ZENTU · WIDGET #105

Ten ready-made calculators with real formulas — loans, mortgages, investments, savings goals, ROI, BMI, calories, tips and trip costs — plus a price estimator you build from sliders, option cards, add-ons and discount toggles.

10 calculatorsprice estimator6 field typesdonut · bars · gaugeyear-by-year tablecopy summaryUS / EU number formats6 skins4 layouts

Car loan

Nova Bank (fictional) · see your monthly payment before you apply

yrs
—
    Apply for this loan

    Illustration only. Your actual rate depends on the lender and your credit profile.

    Year-by-year breakdown
    REAL ESTATE · MORTGAGE

    Down payment, rate and term — plus property tax and insurance in the monthly figure, a donut of where the money goes, and a year-by-year table.

    mortgagetax & insurancedonuttable$ · 1,234,567

    Mortgage calculator

    Harbor Homes (fictional) · 3-bed family homes from $380k

    yrs
    —
      Book a viewing

      Estimate only. Taxes and insurance vary by area and provider.

      Year-by-year breakdown
      SAVINGS & INVESTING

      Monthly investing growth with a year-by-year bar chart, and the reverse question: how much do I need to save each month to reach a goal?

      monthly investingsavings goalbarsUS number format

      Monthly investing

      Invest a little every month

      yrs
      —

        Returns are not guaranteed. Past performance does not predict future results. Not financial advice.

        Year-by-year breakdown
        Investment growthStarting amount + monthly contribution, compounded monthly.

        Wedding fund

        What should I save each month?

        yrs
        —

          Assumes a steady return. Not financial advice.

          Savings goalWorks backwards from the goal, counting what you already have.
          BUSINESS

          An ROI & CAGR calculator for pitches, and a quote estimator a web agency can put on its pricing page — with option cards and add-ons.

          ROICAGRquote estimatoroption cardsadd-ons

          Marketing ROI

          Was the campaign worth it?

          yrs
          —

            Estimates only — actual figures may differ.

            ROI & yearly growthProfit, return %, money multiple and CAGR over any period.

            Website quote

            Pixel & Pine Studio (fictional)

            pages
            Design
            —
              Request this quote

              A starting estimate — we confirm the final price after a short call.

              Quote estimatorSlider, option cards, add-ons and a dropdown. The button carries the total to your contact form.
              HEALTH & FITNESS

              BMI with a color scale and a metric / imperial switch, and daily calories with a macro split for gyms, nutritionists and health blogs.

              BMIunit switchgaugeTDEEmacros

              BMI calculator

              Body mass index

              Units
              cm
              kg
              —

                BMI is a general guide, not a diagnosis. Talk to a doctor about your health.

                BMISwitch to feet / pounds; the healthy weight range updates too.

                Daily calories

                Fitline Gym (fictional)

                Units
                Sex
                yrs
                cm
                kg
                Activity
                Goal
                —
                  Get a meal plan

                  Based on the Mifflin–St Jeor equation. A general estimate, not medical advice.

                  Calories & macrosSex, age, height, weight, activity and goal → calories and grams of protein, carbs and fat.
                  EVERYDAY

                  Compact cards for restaurants and travel sites — tip & split with quick buttons, and a trip fuel cost calculator in euros.

                  tip & splitfuel costcompact€ after the number

                  Tip & split

                  —
                    Tip & splitNumber boxes with − / + buttons and quick tip chips.

                    Road-trip fuel cost

                    km
                    L
                    Return Trip (0 = no, 1 = yes)
                    —

                      Fuel prices change — enter today’s price for your area.

                      Trip fuel costDistance, consumption, price, return trip and people sharing.
                      SAAS PRICING

                      Seats with a stepper, plan cards, add-ons and a “pay yearly −20%” toggle — result on top.

                      stepperplan cardsadd-ons% toggleresult on top

                      Build your plan

                      Nimbus (fictional)

                      seats
                      Plan
                      —
                        Start free trial

                        Prices in USD, before tax.

                        BUILT IN

                        Calculators keep people on the page and turn curiosity into enquiries.

                        formulasestimatorchartscopyformats
                        🧮
                        Real formulas
                        Amortised loans, compound growth, CAGR, Mifflin–St Jeor — not rough guesses.
                        🧱
                        Build a quote
                        Sliders, steppers, dropdowns, option cards, add-ons and % toggles.
                        📊
                        Clear results
                        Big animated number, key figures, donut, bars or BMI gauge.
                        📅
                        Year by year
                        A breakdown table for loans, mortgages, growth and goals.
                        📋
                        Copy & share
                        One click copies a tidy summary; the button can carry the result to your form.
                        🌍
                        Local formats
                        US, European or French grouping, symbol before or after, 0 or 2 decimals.
                        📱
                        Fits anywhere
                        Switches to one column in narrow spaces and on phones.
                        ♿
                        Accessible
                        Real labels, keyboard-friendly sliders and chips, live result updates.

                        Nova Bank, Harbor Homes, Pixel & Pine, Fitline and Nimbus are fictional. All results are estimates for illustration — not financial or medical advice.

                        201 premium elements, Calculator Builder included.

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