Torr to Atm Calculator

1 Torr is equal to 0.00132 atm, this torr to atm calculator is designed to facilitate the conversion between Torr and atmospheres using Pressure (atm) = Pressure (Torr) / 760 formula.

650 Torr to atm: = 0.8553 atm
10 Torr to atm: = 0.01316 atm
923 Torr to atm: = 1.2158 atm
1520 Torr to atm: = 2.0000 atm

Torr, named after the Italian physicist Evangelista Torricelli, is a unit of pressure equivalent to 1 millimeter of mercury (mmHg). On the other hand, atmosphere (atm) is a standard unit of pressure defined as the pressure exerted by Earth’s atmosphere at sea level.

Torr Converted to	Atm
700	0.9211
701	0.9224
702	0.9237
703	0.9250
704	0.9263
705	0.9276
706	0.9289
707	0.9302
708	0.9316
709	0.9329
710	0.9342
711	0.9355
712	0.9368
713	0.9381
714	0.9395
715	0.9408
716	0.9421
717	0.9434
718	0.9447
719	0.9460
720	0.9474
721	0.9487
722	0.9500
723	0.9513
724	0.9526
725	0.9539
726	0.9553
727	0.9566
728	0.9579
729	0.9592
730	0.9605
731	0.9618
732	0.9632
733	0.9645
734	0.9658
735	0.9671
736	0.9684
737	0.9697
738	0.9711
739	0.9724
740	0.9737
741	0.9750
742	0.9763
743	0.9776
744	0.9790
745	0.9803
746	0.9816
747	0.9829
748	0.9842
749	0.9855
750	0.9868
751	0.9882
752	0.9895
753	0.9908
754	0.9921
755	0.9934
756	0.9947
757	0.9961
758	0.9974
759	0.9987
760	1.0000
761	1.0013
762	1.0026
763	1.0040
764	1.0053
765	1.0066
766	1.0079
767	1.0092
768	1.0105
769	1.0118
770	1.0132
771	1.0145
772	1.0158
773	1.0171
774	1.0184
775	1.0197
776	1.0211
777	1.0224
778	1.0237
779	1.0250
780	1.0263
781	1.0276
782	1.0289
783	1.0303
784	1.0316
785	1.0329
786	1.0342
787	1.0355
788	1.0368
789	1.0382
790	1.0395
791	1.0408
792	1.0421
793	1.0434
794	1.0447
795	1.0461
796	1.0474
797	1.0487
798	1.0500
799	1.0513
800	1.0526

Torr to Atmospheres Conversion Formula

The formula for converting Torr to atm is:

1 atm = 760 Torr

To convert a pressure value from Torr to atm, we divide the Torr value by 760:

Pressure (atm) = Pressure (Torr) / 760

760 Torr equals exactly 1 atm
Pressures below 760 Torr correspond to fractions of an atmosphere
Pressures above 760 Torr result in values greater than 1 atm

Consider a pressure of 1520 Torr.

To convert this to atmospheres:

1520 Torr / 760 = 2 atm

The 1520 Torr is equivalent to 2 atmospheres of pressure.

How to Convert Torr to atm?

Converting Torr to atm involves a simple three-step process:

Start with your pressure value in Torr
Divide this value by 760 (the number of Torr in 1 atm)
The result is your pressure in atmospheres

Suppose we need to convert 532 Torr to atm:

We begin with 532 Torr

Divide 532 by 760: 532 / 760 ≈ 0.7

The 532 Torr ≈ 0.7 atm

Is 760 Torr Equal to 1 atm?

Yes, 760 Torr is precisely equal to 1 atm.

To verify this, let’s apply our conversion formula:

760 Torr / 760 = 1 atm

This equivalence forms the basis of the conversion factor between these two units of pressure.

The standard atmosphere was originally defined as the pressure exerted by a column of mercury 760 mm high at 0°C under standard gravity.

Is 101.325 Torr Equal to 1 atm?

No, 101.325 Torr is not equal to 1 atm. This is a common misconception arising from the similarity to another pressure unit, the kilopascal (kPa).

To clarify:

1 atm = 760 Torr
1 atm = 101.325 kPa

Let’s convert 101.325 Torr to atm using our formula:

101.325 Torr / 760 ≈ 0.1333 atm

This calculation shows that 101.325 Torr is significantly less than 1 atm. In fact, it’s approximately 13.33% of an atmosphere.

References

National Institute of Standards and Technology (NIST): Fundamental Physical Constants
International Bureau of Weights and Measures (BIPM): The International System of Units (SI)

Related Tools:

Torr to Atm Calculator – Convert Torr to Atmospheres