Some of the known binary ABO₃perovskites with ferro- (FE) or antiferroelectric (AFE) at $T_{\text{C}}$ and different magnetic phase transitions (PT): ferro-and antiferromagnetic at $T_{\text{N}}$ and also some of their solid solutions are considered. Some correlations between their FE or AFE and/or magnetic PTs temperatures, on the one hand, and their interatomic bond $A$–O strains, on the other hand, have been constructed. It is shown that in the plotted diagrams these temperatures change with a change in ${\delta {}_A}_{\text{O}}$ values as follows: classical FEs are followed by multiferroics, starting with BiFeO₃ and ending with YVO₃, followed by classical AFEs. At the same time, the temperatures $T_{\text{C}}$ and $T_{\text{N}}$ experience maxima at the corresponding points for BiFeO₃, then quickly decrease, and the difference between them, $T_{\text{C}}$-$T_{\text{N}}$, basically also decreases, slightly increasing along the way to the point EuTiO₃. which made it possible to systematize these $T_{\text{C}}$ and $T_{\text{N}}$.Some of the known binary ABO₃perovskites with ferro- (FE) or antiferroelectric (AFE) at $T_{\text{C}}$ and different magnetic phase transitions (PT): ferro-and antiferromagnetic at $T_{\text{N}}$ and also some of their solid solutions are considered. Some correlations between their FE or AFE and/or magnetic PTs temperatures, on the one hand, and their interatomic bond $A$–O strains, on the other hand, have been constructed. It is shown that in the plotted diagrams these temperatures change with a change in ${\delta {}_A}_{\text{O}}$ values as follows: classical FEs are followed by multiferroics, starting with BiFeO₃ and ending with YVO₃, followed by classical AFEs. At the same time, the temperatures $T_{\text{C}}$ and $T_{\text{N}}$ experience maxima at the corresponding points for BiFeO₃, then quickly decrease, and the difference between them, $T_{\text{C}}$-$T_{\text{N}}$, basically also decreases, slightly increasing along the way to the point EuTiO₃. which made it possible to systematize these $T_{\text{C}}$ and $T_{\text{N}}$.