Calculate the due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 400 units (Dollar, Euro, Pound, etc.), from date: Apr 7, 2017, to date: May 7, 2017, namely for a period of 30 days, with an annual simple flat interest rate of 29% if the commission fee (withdrawal or payment) is 0%.

Principal (initial amount), P = 400


Annual simple interest rate, R = 29%


From date: Apr 7, 2017


To date: May 7, 2017


Duration, T = 30 days


Commission fee (withdrawal or payment), F = 0%


No. of days in a year, N = 365


I = Simple interest:

I = (P × R × T) ÷ N =


(400 × 29% × 30) ÷ 365 =


(400 × 29 × 30) ÷ (365 × 100) =


348,000 ÷ 36,500 ≈


9.534246575342 ≈


9.53

B = Amount earned:

B = P + I =


400 + 9.534246575342 =


409.534246575342 ≈


409.53

Signs: % percent, ÷ divide, × multiply, ≈ approximately equal;

Writing numbers: comma ',' as thousands separator; point '.' as a decimal mark;

Calculate simple flat rate interest on a principal borrowed, lent

Simple flat rate interest = (Principal × Annual simple flat interest rate × Duration in days) ÷ Number of days in a year

Latest calculated simple flat rate interest values

Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 400 units (Dollar, Euro, Pound, etc.), from date: Apr 07, 2017, to date: May 07, 2017, namely for a period of 30 days, with an annual simple flat interest rate of 29% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 600 units (Dollar, Euro, Pound, etc.), from date: Feb 14, 2017, to date: Nov 14, 2017, namely for a period of 273 days (9 Months), with an annual simple flat interest rate of 5% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 50,000 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 2018, to date: Jan 01, 2019, namely for a period of 365 days (12 Months), with an annual simple flat interest rate of 6.5% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 16.5 units (Dollar, Euro, Pound, etc.), from date: May 19, 2017, to date: Jun 19, 2018, namely for a period of 396 days (13 Months), with an annual simple flat interest rate of 0.9% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 1,825 units (Dollar, Euro, Pound, etc.), from date: Mar 15, 2015, to date: Dec 31, 2015, namely for a period of 291 days (9 Months and 16 Days), with an annual simple flat interest rate of 24% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 15,000 units (Dollar, Euro, Pound, etc.), from date: Jun 21, 2017, to date: Jul 21, 2018, namely for a period of 395 days (13 Months), with an annual simple flat interest rate of 1.85% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 64,800 units (Dollar, Euro, Pound, etc.), from date: Feb 06, 2019, to date: Feb 06, 2020, namely for a period of 365 days (12 Months), with an annual simple flat interest rate of 0.15% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 50,000 units (Dollar, Euro, Pound, etc.), from date: Apr 15, 2011, to date: Aug 30, 2011, namely for a period of 137 days (4 Months and 15 Days), with an annual simple flat interest rate of 6% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 400 units (Dollar, Euro, Pound, etc.), from date: Jan 22, 2019, to date: Feb 22, 2022, namely for a period of 1,127 days (37 Months), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 2,100 units (Dollar, Euro, Pound, etc.), from date: Nov 17, 2018, to date: Dec 17, 2018, namely for a period of 30 days, with an annual simple flat interest rate of 3% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 95,000 units (Dollar, Euro, Pound, etc.), from date: Jun 05, 2018, to date: Jun 05, 2028, namely for a period of 3,653 days (120 Months), with an annual simple flat interest rate of 5% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 3,970 units (Dollar, Euro, Pound, etc.), from date: Sep 01, 2012, to date: Aug 30, 2018, namely for a period of 2,189 days (71 Months and 29 Days), with an annual simple flat interest rate of 0.02% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 4,000 units (Dollar, Euro, Pound, etc.), from date: May 08, 2019, to date: Jul 08, 2019, namely for a period of 61 days (2 Months), with an annual simple flat interest rate of 2% if the commission fee (withdrawal or payment) is 0%. Jun 25 07:57 UTC (GMT)
All users calculated simple flat rate interest values